ADVBIO Genetics Quiz
Preview:
Colorblindness is a sex-linked recessive disorder. If the daughter of a couple is colorblind, what are the two possible genotypes of her mother?
a. XAXA and XAXa
b. XAXA and XaXa
c. XAXa and XaXa
d. Cannot be determined
Different forms of a gene are called
A. alleles
B. traits
C. genotypes
D. chromosomes
A dihybrid cross involves how many traits?
A. 1
B. 2
C. 3
D. 4
Which is the correct phenotypic % for the following Punnett square if T=tall and t=short
A. 100% tall
B. 100% short
C. 50% tall, 50% short
D. 75% tall, 25% short
What percentage will have heterozygous genotypes?
A. 0%
B. 25%
C. 50%
D. 100%
If there is a cross of a red and white chicken, and the trait is co-dominant, what will be the result?
A. a pink chicken
B. a red and white chicken
C. a red chicken
D. a white chicken
What percentage will be tall offspring if B=tall and b=short?
A. 0%
B. 25%
C. 50%
D. 100%
This is a pedigree that follows blue eyes which is a recessive trait. What are the genotypes of II-1 and II-2?
A. Aa, AA
B. aa, aa
C. AA, AA
D. Aa, Aa
A complex inheritance pattern that occurs when neither allele is dominant and both alleles are expressed
A. simple dominance
B. sex-linked trait
C. co-dominance
D. incomplete dominance
A homozygous individual would have a genotype of
A. gray
B. RW
C. AA
D. Aa
organism heterozygous for a specific trait
A. recessive
B. purebred
C. hybrid
D. dominant
What percentage of the offspring will have recessive homozygous genotypes?
A. 0%
B. 25%
C. 50%
D. 100%
Dominant alleles are represented by a:
A. Male gene
B. lowercase letter
C. recessive trait
D. capital letter
How many daughter cells are produced from meiosis ?
A. 10
B. 6
C. 4
D. 2
Normal humans have 46 chromosomes in their somatic cells. How many chromosomes do the gametes have?
A. 46
B. 23
C. 12
D. 92
